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It is only months since the US diplomatic cables released by whistleblowing website WikiLeaks made headlines around the world with their revelations about Nigeria. Among them, allegations that Nigeria's government dropped legal action against pharmaceutical giant Pfizer, which is accused of running a clinical trial that killed and disabled children, after the drugs company threatened to investigate the attorney-general. But as voters head to the polls for presidential and regional elections, how many will be influenced by the material published over the last few months, and could such revelations bring about real change?